This application note descriBes how the existing dual-port block memories in the Spartan™-IIand Virtex™ families can be used as Quad-Port memories. This essentially involves a dataaccess time (halved) versus functionality (doubled) trade-off. The overall bandwidth of the blockmemory in terms of bits per second will remain the same.
上传时间： 2014-01-24
上传用户：15527161163
This application note descriBes how to build a system that can be used for determining theoptimal phase shift for a Double Data Rate (DDR) memory feedback clock. In this system, theDDR memory is controlled by a controller that attaches to either the OPB or PLB and is used inan embedded microprocessor application. This reference system also uses a DCM that isconfigured so that the phase of its output clock can be changed while the system is running anda GPIO core that controls that phase shift. The GPIO output is controlled by a softwareapplication that can be run on a PowerPC® 405 or Microblaze™ microprocessor.
上传时间： 2014-11-26
上传用户：erkuizhang
This application note descriBes the implementation of a two-dimensional Rank Order filter. Thereference design includes the RTL VHDL implementation of an efficient sorting algorithm. Thedesign is parameterizable for input/output precision, color standards, filter kernel size,maximum horizontal resolution, and implementation options. The rank to be selected can bemodified dynamically, and the actual horizontal resolution is picked up automatically from theinput synchronization signals. The design has a fully synchronous interface through the ce, clk,and rst ports.
上传时间： 2013-12-14
上传用户：逗逗666
XAPP520将符合2.5V和3.3V I/O标准的7系列FPGA高性能I/O Bank进行连接 The I/Os in Xilinx® 7 series FPGAs are classified as either high range (HR) or high performance (HP) banks. HR I/O banks can be operated from 1.2V to 3.3V, whereas HP I/O banks are optimized for operation between 1.2V and 1.8V. In circumstances that require an HP 1.8V I/O bank to interface with 2.5V or 3.3V logic, a range of options can be deployed. This application note descriBes methodologies for interfacing 7 series HP I/O banks with 2.5V and 3.3V systems
上传时间： 2013-11-06
上传用户：wentianyou
The revolution of automation on factory floors is a key driver for the seemingly insatiable demand for higher productivity， lower total cost of ownership，and high safety. As a result， industrial applications drive an insatiable demand of higher data bandwidth and higher system-level performance. This white paper descriBes the trends and challenges seen by designers and how FPGAs enable solutions to meet their stringent design goals.
上传时间： 2013-11-08
上传用户：yan2267246
Generating next numbers in SQLServer should not be a problem. But problems arise when a customer asks for different types of next numbers that you cannot generate directly from SQL Server. This brief article descriBes how you would tackle this problem in different scenarios.
标签： Generating SQLServer customer problems
上传时间： 2015-01-11
上传用户：as275944189
this tar includes my code which employ the Lin-Kernighan algorithm to address the tsp problem. this tar also include some testfiles and config file and a readme which descriBes how to run this program.
标签： this Lin-Kernighan algorithm the
上传时间： 2014-01-10
上传用户：stella2015
Decoding most of the infrared signals can be easily handled by PIC16C5X microcontrollers. This application note descriBes how this decoding may be done. The only mandatory hardware for decoding IR signals is an infrared receiver. The use of two types is described here. Both are modular types used often by the consumer electronics industry. The first type responds to infrared signals modulated at about 40 kHz. The second responds to non-modulated infrared pulses and has a restricted range. The hardware costs of each approach will be less than two dollars.
标签： microcontrollers Decoding infrared handled
上传时间： 2015-05-24
上传用户：ruan2570406
county, random population coordinates were generated using the complete spatial randomness (CSR) function in S-PLUS. Then, the background information was attached to each individual county based on the county?s distribution for the class of interest. Finally, all counties were merged into a single dataset that descriBes the whole state
标签： coordinates population randomness generated
上传时间： 2014-01-18
上传用户：hn891122
Java+Tomcat+ZK Welcome to ZK, the simplest way to make Web applications rich. The Developer s Guide descriBes the concepts and features of ZK. For installation, refer to the Quick Start Guide. For fully description of properties and methods of components, refer to the Developer s Reference.
标签： applications Developer simplest Welcome
上传时间： 2015-07-19
上传用户：rocwangdp
